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GeForce GTX 260 vs GeForce GTX 275

Intro

The GeForce GTX 260 makes use of a 65 nm design. nVidia has set the core speed at 576 MHz. The GDDR3 RAM is set to run at a speed of 999 MHz on this particular model. It features 192 SPUs as well as 64 Texture Address Units and 28 ROPs.

Compare that to the GeForce GTX 275, which features core speeds of 633 MHz on the GPU, and 1134 MHz on the 896 MB of GDDR3 RAM. It features 240 SPUs as well as 80 Texture Address Units and 28 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 260 182 Watts
GeForce GTX 275 219 Watts
Difference: 37 Watts (20%)

Memory Bandwidth

Performance-wise, the GeForce GTX 275 should in theory be just a bit superior to the GeForce GTX 260 overall. (explain)

GeForce GTX 275 127008 MB/sec
GeForce GTX 260 111888 MB/sec
Difference: 15120 (14%)

Texel Rate

The GeForce GTX 275 will be quite a bit (approximately 37%) more effective at AF than the GeForce GTX 260. (explain)

GeForce GTX 275 50640 Mtexels/sec
GeForce GTX 260 36864 Mtexels/sec
Difference: 13776 (37%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 275 is superior to the GeForce GTX 260, though not by far. (explain)

GeForce GTX 275 17724 Mpixels/sec
GeForce GTX 260 16128 Mpixels/sec
Difference: 1596 (10%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce GTX 260

Amazon.com

Check prices at:

GeForce GTX 275

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 260 GeForce GTX 275
Manufacturer nVidia nVidia
Year June 16, 2008 April 9, 2009
Code Name G200 G200b
Memory 896 MB 896 MB
Core Speed 576 MHz 633 MHz
Memory Speed 1998 MHz 2268 MHz
Power (Max TDP) 182 watts 219 watts
Bandwidth 111888 MB/sec 127008 MB/sec
Texel Rate 36864 Mtexels/sec 50640 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 17724 Mpixels/sec
Unified Shaders 192 240
Texture Mapping Units 64 80
Render Output Units 28 28
Bus Type GDDR3 GDDR3
Bus Width 448-bit 448-bit
Fab Process 65 nm 55 nm
Transistors 1400 million 1400 million
Bus PCIe x16 2.0 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.1 OpenGL 3.1

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 260

Amazon.com

Check prices at:

GeForce GTX 275

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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